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The Logic Behind A 14-Day Quarantine After Travel Or COVID-19 Exposure : Shots - Health News What's behind the "14 days of self-quarantine" guidance after exposure to someone with COVID-19 or after travel from a place with a high number of cases? Think of yourself as a potential incubator.
NPR logo The Science Behind A 14-Day Quarantine After Possible COVID-19 Exposure

The Science Behind A 14-Day Quarantine After Possible COVID-19 Exposure

A sign on the M8 motorway last week in Glasgow, Scotland. Jeff J. Mitchell/Getty Images hide caption

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Jeff J. Mitchell/Getty Images

受调控影响东莞楼市低迷 1月成交量急挫近八成

Jeff J. Mitchell/Getty Images

To stop the spread of the coronavirus, health officials have a favorite refrain: After being in a city or region where there have been a lot of COVID-19 cases, spend 14 days in quarantine even if you feel perfectly fine — don't leave your house. Coming from New York? 14-day quarantine. Arriving in Hawaii? 14-day quarantine. Been in Italy or China or Iran recently? 14-day quarantine.

"That's a long-standing public health practice, and it's called 'traveler's quarantine,' " explains Lindsay Wiley, a professor at American University's Washington College of Law. "Fourteen days is not a made-up number here — it's based on what we know so far about COVID-19, and it's possible that over time we'll see that number change as we learn more [about the virus]."

The 14-day rule is widespread because public health agencies around the world work together on these guidelines. In the U.S., the 卫浴企业以营销占领市场 需掌握方法 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

Captain America: Civil War will hit theatres May 6, 2016. Who's side are you on?
Jules Pieri

“中国是澳大利亚最有价值的旅游市场,到2020年其价值可能超过130亿美元。”

The Fate of the Furious was the top-grossing foreign film, ranking second on the list.
"There was a large crowd outside, including my teachers and other parents, people looked quite agitated," Sun said of the moment he was rescued.
007系列电影主题曲第五名:保罗·麦卡特尼和Wings乐队--《生死关头》
从某些方面来看,《生活真奇怪》(Life Is Strange)与Dontnod Entertainment的科幻动作类游戏《勿忘我》(Remember Me)是两款截然不同的游戏,而从另一些方面来看,这两款章节式的冒险游戏十分类似。两款游戏都采用了虚幻3引擎(Unreal Engine 3),打造了美轮美奂的游戏世界供玩家探索。这两款游戏的名字也都有非常具有女性特征的主角。《生活真奇怪》的故事发生于美国俄勒冈州的阿卡迪亚湾,玩家将操纵青年马克斯o考菲尔德,开始一段包含有五个章节互动剧情的冒险。
n. 增加,附加物,加法
衣服。要买那种又贵又紧的定制款,达到下一秒纽扣就会被胸肌爆开的效果。
Leadership
The Caixin-sponsored series is based on a much smaller sample of private companies than the official PMI reading, which focuses on larger state enterprises, and tends to be more volatile.

"The incubation period varies from virus to virus and sometimes from host to host," says Rachel Graham, a virologist at the University of North Carolina's Gillings School of Global Public Health.

For the virus that causes COVID-19 — its official name is SARS-CoV-2 — researchers have found that the typical incubation period is about five days. About 97% of the people who get infected and develop symptoms will do so within 11 to 12 days, and about 99% will within 14 days.

Canadian border agents are handing people entering Canada a sheet from the Public Health Agency of Canada that instructs them to self-quarantine for 14 days and monitor themselves for any symptoms that might signal COVID-19. Selena Simmons-Duffin/NPR hide caption

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Selena Simmons-Duffin/NPR

Best wishes for the holidays and happiness throughout the New Year.
Part of the appeal of online programmes lies in their flexibility, reach and slower pace of delivery than cam-pus-based MBAs. Apart from IE, which imposes an 18-month time limit, participants have on average about five years to complete their degrees.

7. Flying Lotus “You’re Dead” (Warp) The new fusion makes no apologies for the old fusion, just a series of upgrades. As a producer, Flying Lotus values continuity as much as disruption, hazy beauty as well as jump-cut clamor. His suitelike reflection on death leaves room for irreverent wit — and, on “Never Catch Me,” one of the year’s best verses by Kendrick Lamar.
雷军表示:“这是一个使我震惊的消息。作为一名围棋的忠实爱好者,我从来没有想到人工智能在当前阶段可以击败一个人类冠军,因为这是一项非常复杂的棋类运动。”
安哥拉,津巴布韦,和阿尔巴尼亚的排名在所有国家中上升幅度最大。“从广度和深度上来讲,拉丁美洲,加勒比地区,以及撒哈拉以南非洲等地域的国家,人民幸福感提高比较大。腐败的减少也是提高幸福感的一个很重要的原因。”
5. Life is like a coffee table: it’s got tea sets and dinnerware all over it. (beiju, 杯具, is a homophone for tragedy, 悲剧, and dinnerware, canju, 餐具, a homophone for disaster, 惨剧).

(Actually, JetBlue wasn’t the absolute worst airline for departure delays the last three holiday seasons. That crown went to Comair, a regional carrier for Delta Air Lines
迅速崛起的“色情短信”服务商Snapchat与早期的社交媒体巨头Facebook具有令人不可思议的相似性。我们现在都知道扎克伯格早早就投下的赌注获得了多大的成功(更不必说他还彻底击败了卑劣的文克莱沃斯孪生兄弟)。那么,Snapchat能否拥有同样光明的未来?
以我所有的爱心与真诚祝你及全家圣诞快乐。
['si:nj?]
英国的一个收集全球气温纪录的科学小组也将在未来几周内提交报告。

An illustration created at the U.S. Centers for Disease Control and Prevention conveys a likeness of the coronavirus that's behind the current pandemic. CDC hide caption

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CDC

以100亿港元(合12.9亿美元)购入大新金融中心(Dah Sing Financial Centre)的中国光大控股(China Everbright),只是过去一年里在香港大举购置总部大楼的众多内地企业之一。
adj. 荒谬的,可笑的

CDC

在英国,今年可能是大型咨询公司正式进入法律市场的一年吗?其他的“另类业务结构”——或者说按照“乐购法”(Tesco law)成立的律所——将通过提供固定费用服务、把业务外包给松散的律师网络,或者推出法律聊天机器人提供即时而实惠的建议,而终于立足消费者市场吗?为了普通公民的利益,得有人突破这个领域。
Profits at China’s biggest banks shrank in 2015, as the sector weathered a year of central bank rate cuts and saw an end to easy profits after the government lifted the cap on interest rates on deposits.

No. The Bank of Japan’s life will get tougher in 2018 as the US Federal Reserve tightens policy and widens the interest rate gap with Japan. But governor Haruhiko Kuroda is determined to hike rates in response to one thing only: inflation. The BoJ may let the yield curve climb a little if prices start to accelerate, but real interest rates in Japan will end 2018 no higher than at the start of the year.
201012/119869.shtml
Judge Business School at Cambridge University in the UK was the biggest riser, climbing 19 places to 29th thanks to a strong performance in the executive MBA ranking in its first participation in that list. Warwick Business School made a comeback to the top 20 (19) after missing out on the MiM ranking in 2013.
The U.S. $10 bill will feature the portrait of a notable U.S. woman by 2020.

现在,她主要在模特行业发展,但是她也很希望跻身演绎圈。
10.Michigan's Upper Peninsula, the US
The winner will be announced in March, and is expected to have a significant impact on the direction of the consultancy. Some insiders favour candidates with expertise in fast-growing areas such as data analytics, whereas others want a traditionalist who will protect the firm’s brand.
Many grand and spectacular museums are located in picturesque cities like Bruges, Antwerp and Brussels. Art lovers can fully engage themselves in the numerous treasures dating back to the medieval period. Exploring the quiet towns and appreciating their Gothic architecture is also an opportunity not to be missed. As the hometown of the world’s best beers, chocolates and fries, everyone can be a gourmet here. With the 100th anniversary of the outbreak of World War I approaching, Belgium is set to draw many tourists in the coming years.

国内航空统计公司飞常准发布的最新报告显示,我国主要机场的准点率仍然远未让人满意。
中国(大陆及香港)在排行榜上新添了25个成员,增长数量超过其他任何国家,共计207家。三个国家今年首次在排行榜上亮相了:毛里求斯、斯洛伐克以及多哥。
这是伦敦商学院(London Business School)和哥伦比亚商学院(Columbia Business School)合办的EMBA-Global项目首次跌出前5名。
According to a 2014 survey it conducted, 86 per cent of respondents who finished the two years said they were taking action to end educational in-equality through their work and 65 per cent outside of their work.
Former world number one Woods has not won a single tournament since 2013 and missed most of the last year recovering from surgery on his back. However, his name alone continued to bank him millions. He earned pound 31 million from endorsement deals with brands including Nike and Titleist, placing him 12th in the list of top earners.

[.sju:p?'vin]
One of the best things you can do to improve your entire life, not just school, is meditate. Fifteen minutes a day is all you need to feel calm, centered and confident.
The report found that third-tier cities are most livable places.
It shifts your kid's weight to your shoulders and core instead of your back.
Astronomers confirmed a key part of Einstein’s general theory of relativity in 2016 when they announced that the LIGO array had detected gravitational waves released by the collision of two black holes. The researchers won a Nobel Prize for the discovery. But they’re not done: In October, scientists announced the finding of two dead stars colliding — not only hearing the ripples in space-time they made, but confirming the event visually with powerful telescopes. Collisions of neutron stars are believed to be the source of all heavy metals in the universe, including gold and silver, and the detection by LIGO helps verify accepted explanations of how the chemistry of the universe formed.

我在喜马拉雅山的山脚下度过了青春岁月,当时有个朋友被我们称为“追梦人”。他每天都在享受最微妙的乐趣——用五颜六色标注蝴蝶、数地平线上的高峰,对着形状各异的云朵编故事。他是个快乐的家伙,对生活的美妙深有体会,容易兴奋激动。亲爱的2013届毕业生,我认识这家伙很多年了,今天我坐下来给你们写这篇文章的时候,突然想到了他。
在中国版推特新浪微博上,很多网民为男孩危急情况下的勇敢、淡定点赞。
提供就业指导工作的北京新锦程研究院的执行院长张景岫表示,他并没看到高校学生的创业意向有降低的趋势,但是他承认学生的自主创业意向很低。
And while many Bond girls fade into acting obscurity or fall into second-class flicks after making a 007 splash, Marlohe and her agents at ICM Partners are making sure the actress surrounds herself with top-flight talent as she uses the Bond movie as a launching pad for an international career.

除了作为微信核心的私聊和群卿功能之外,用户还可以通过“漂流瓶”功能寻找新的好友,具体方法是录制一段信息装在虚拟的“瓶子”里扔出去,等陌生人捡起来回复。“查看附近的人”功能与一些手机交友应用相似,用户通过它可以浏览附近其他用户的资料。另外还有一个名叫“朋友圈”的功能,用户通过它可以将相册公开分享给好友群,跟照片分享应用Instagram很像。
After all, during the last round of collections, the most striking pieces — from Louis Vuitton, Dior, Proenza Schouler, Narciso Rodriguez — had a streamlined momentum that wasn’t dragged down by any decade-related reference, or identity. They were clothes that went striding into the future, freed from the weight of the past.
Apple Inc., Alphabet Inc.'s Google, and Coca-Cola Co. topped the list of the world's 100 most valuable brands in 2016, while technology and automotive brands dominated the overall rankings, according to a new report from brand consultancy Interbrand.
Last year, Islamic State militants seized 49 Turkish hostages from Turkey's consulate in Mosul and held them for more than three months before releasing the group. Those hostages included diplomats, soldiers and children.
单词slouch 联想记忆:
3. The root cause of eczema has finally been identified. Scientists have tracked down a series of proteins and molecular pathways that lead to this insufferable skin problem, revealing that the protein filaggrin isn't the sole culprit we thought it was.

进入2月以来,猛龙逐渐感到他们需要进行人员调整了:良好的开局已经被挥霍的差不多了,他们的防守不足以限制对手,他们在四号位有个巨大的漏洞,在凯尔-洛瑞即将成为自由球员之前,他们急迫的需要利用好他的巅峰期。
和所有大学生一样,埃文o雷喜欢使用表情符号。但让他恼火的是,没有什么表情符号能够让他向圣母大学的同学表达自己对该校橄榄球队战斗的爱尔兰人的自豪感。于是,他和肖恩o欧布莱恩一起创办了一桩小生意,以弥补这一空白。这款名为TextPride的产品从体育和娱乐世界中获得图像授权,然后将其打包成贴纸出售。比如,在Kik这样的短信应用中,用户可以花1.99美元买一包迪斯尼电影《冰雪奇缘》的贴纸。
The January-to-November period in the United States this year was the warmest first 11 months of any year on record for the contiguous states. And 2012 will likely surpass 1998 as the warmest year on record for the nation, according to the National Oceanic and Atmospheric Administration.

Employment growth exceeded projections.
elegant
每天向大家推送短小精悍的英语学习资料.
adj. 优雅的
In 2008, China's government added an entry to the list of conditions classified as mental illnesses: "Internet addiction." According to numerous reports in state-run media, China's young people were spending too much time in Internet cafes, ignoring family or work to play online games into the wee hours, sometimes neglecting to eat, drink, or sleep, and endangering their own health.